If you are trying to install the web part on a SharePoint 2019 server, you may get the following error while adding it to your site: “Sorry, apps are turned off. If you know who runs the server, tell them to enable apps.”
Here are the possible reasons and solutions:
If you still have the same error after trying the above solutions, please open a ticket to let our technicians analyze the problem.
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Reason
Solution
Apps are not enabled in your farm
Ensure you have apps enabled in your SharePoint 2019 farm.
Subscription service is not setup
The first and most likely problem is that the subscription service is not configured in your farm.
Please configure it.
The app management service is not associated with your web application
Make sure the app management service application is associated with the web application where you want to add the SPFx web part.
App URL is not configured
If you have not configured the app URLs, please ensure you have given values to App Domain and App Prefix in your App Store settings.
